CA2344727A1 - Lock for knock-down storage rack - Google Patents
Lock for knock-down storage rack Download PDFInfo
- Publication number
- CA2344727A1 CA2344727A1 CA 2344727 CA2344727A CA2344727A1 CA 2344727 A1 CA2344727 A1 CA 2344727A1 CA 2344727 CA2344727 CA 2344727 CA 2344727 A CA2344727 A CA 2344727A CA 2344727 A1 CA2344727 A1 CA 2344727A1
- Authority
- CA
- Canada
- Prior art keywords
- pin
- lock
- connector
- retainer
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B57/00—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions
- A47B57/30—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports
- A47B57/40—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports consisting of hooks coacting with openings
- A47B57/402—Hooks attached to a member embracing at least two sides of an upright, e.g. an angle bracket
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B57/00—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions
- A47B57/30—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports
- A47B57/40—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports consisting of hooks coacting with openings
- A47B57/408—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports consisting of hooks coacting with openings with a security device
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B57/00—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions
- A47B57/30—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports
- A47B57/48—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports consisting of tongues, pins or similar projecting means coacting with openings
- A47B57/50—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports consisting of tongues, pins or similar projecting means coacting with openings characterised by shape or orientation of opening, e.g. keyhole-shaped
Landscapes
- Assembled Shelves (AREA)
Abstract
The lock is attached to a connector for interconnecting a shelf-supporting beam to an upright of a knock-down storage rack. The lock includes a pin which is connected to the connector and which is slidable between locking and unlocking positions. The pin, when in the locking position, is within one of a number of openings formed in the upright with resulting locking of the upright to the connector. When the pin is in the unlocking position, it is outside the opening thus allowing the upright to be separated from the connector. The lock includes a resilient rod which is biased into a groove formed in the shank of the pin when the pin is in the locking position. The rod prevents the pin from moving from the locking position unless a force, opposed to the bias of the rod, is applied to the pin to cause the rod to withdraw from the groove.
Description
BACKGROUND OF THE INVENTION
This invention relates to knock-down storage rack and more particularly to a lock for preventing the separation of the uprights from the shelves of a knock-down storage rack after they are interconnected.
Knock-down storage racks are well known and are in common use for storage in such places as warehouses, garages and basements. The racks are composed of columns or uprights and horizontal shelf supporting beams. Usually the uprights have a number of spaced apart slots and the beams have teeth or studs. The beams are connected to the uprights by insertion of the teeth or studs into the slots of the uprights. The beams can be set at a desired level by appropriate choice of slots in which the teeth or studs are inserted.
Once the teeth or studs of the shelf supporting beams are in the slots, the beams will remain secure so long as there is a downward force on the beams. Thus if the beams are loaded, the storage rack will remain intact. If however an upward force is applied to the beams, the beams will separate from the uprights and the storage rack will come apart. It may also come apart when the beams are not loaded and a sideways force is applied to the rack.
Fork lift trucks are commonly used to load and unload heavy items on storage racks.
Such items are usually placed on pallets so that there is space beneath them for the prongs of the fork lift. In unloading an item from the shel f supporting beam, the operator of the truck may accidentally insert the prongs beneath the beam where the item is located and not into the pallet. When the operator li:Fts the prongs, the beam will rise with the load and the storage rack may come apart. When this happens, heavy items on the beams may fall onto the operator of the truck or any bystanders in the vicinity of the rack with resulting injury or, in extreme instances, death. Items on the rack may be also damaged in the fall.
It is known to provide locks for preventing the shelves from separating from the uprights once the storage rack is assembled. Examples of such locks are described in U.S.
patents no. 5,938,367 and no. 6,155,441. Such locks frequently have a pin which when activated, is within the same slat as a tooth or stud of a shelf where the pin prevents the tooth or stud from withdrawing from the slot in the upright. The pin is deactivated by withdrawing it from the slot at which time the shelf may be separated from the upright.
A shortcoming of many such locks is that they are susceptible to accidental deactivation. Some, for example, become deactivated when they are rotated one quarter or one half turn. When such locks are accidentally struck, they may turn incrementally. If they are struck repeatedly, eventually they will rotate sufficiently to deactivate.
Other locks are spring-loaded and activate and deactivate when they are pressed. They too can deactivate when accidentally struck.
The lock of the subject invention does not deactivate when accidentally struck. The lock can only be opened or deactivated by means of a relatively large force.
Preferably a tool such as a screw driver is required to apply such a force and in that case, the lock will not
This invention relates to knock-down storage rack and more particularly to a lock for preventing the separation of the uprights from the shelves of a knock-down storage rack after they are interconnected.
Knock-down storage racks are well known and are in common use for storage in such places as warehouses, garages and basements. The racks are composed of columns or uprights and horizontal shelf supporting beams. Usually the uprights have a number of spaced apart slots and the beams have teeth or studs. The beams are connected to the uprights by insertion of the teeth or studs into the slots of the uprights. The beams can be set at a desired level by appropriate choice of slots in which the teeth or studs are inserted.
Once the teeth or studs of the shelf supporting beams are in the slots, the beams will remain secure so long as there is a downward force on the beams. Thus if the beams are loaded, the storage rack will remain intact. If however an upward force is applied to the beams, the beams will separate from the uprights and the storage rack will come apart. It may also come apart when the beams are not loaded and a sideways force is applied to the rack.
Fork lift trucks are commonly used to load and unload heavy items on storage racks.
Such items are usually placed on pallets so that there is space beneath them for the prongs of the fork lift. In unloading an item from the shel f supporting beam, the operator of the truck may accidentally insert the prongs beneath the beam where the item is located and not into the pallet. When the operator li:Fts the prongs, the beam will rise with the load and the storage rack may come apart. When this happens, heavy items on the beams may fall onto the operator of the truck or any bystanders in the vicinity of the rack with resulting injury or, in extreme instances, death. Items on the rack may be also damaged in the fall.
It is known to provide locks for preventing the shelves from separating from the uprights once the storage rack is assembled. Examples of such locks are described in U.S.
patents no. 5,938,367 and no. 6,155,441. Such locks frequently have a pin which when activated, is within the same slat as a tooth or stud of a shelf where the pin prevents the tooth or stud from withdrawing from the slot in the upright. The pin is deactivated by withdrawing it from the slot at which time the shelf may be separated from the upright.
A shortcoming of many such locks is that they are susceptible to accidental deactivation. Some, for example, become deactivated when they are rotated one quarter or one half turn. When such locks are accidentally struck, they may turn incrementally. If they are struck repeatedly, eventually they will rotate sufficiently to deactivate.
Other locks are spring-loaded and activate and deactivate when they are pressed. They too can deactivate when accidentally struck.
The lock of the subject invention does not deactivate when accidentally struck. The lock can only be opened or deactivated by means of a relatively large force.
Preferably a tool such as a screw driver is required to apply such a force and in that case, the lock will not
2 open unless an operator has such a tool and he uses it deliberately to open the lock.
Accordingly a storage rack equipped with such a lock will not come apart should it be accidentally struck or should its shelf supporting beams be accidentally raised when items are being unloaded from them.
SUMMARY OF THE INVENTION
Briefly, the lock of my invention is attached to a connector for interconnecting a shelf supporting beam to an upright of a knock-down storage rack. The connector is fixed to the beam and is removably connected to the upright by means of the lock. A
pin is connected to the connector and is slidable between locking and unlocking positions. The pin has a head and a shank connected to and extending from the head and terminating at an outer end. A recess is formed in the shank. The outer end of the pin, when in the locking position, is within one of a number of openings formed in the upright with resulting locking of the upright to the connector. The outer end o f the pin, when in the unlocking position, is outside the opening thus allowing the upright to be separated from the connector. The lock includes a retainer which is biased by rc;silient means into the recess when the pin is in the locking position and prevents the pin from moving from the locking pasition unless a force, opposed to the bias of the retainer, is applied to the pin to cause the retainer to withdraw from the recess.
Accordingly a storage rack equipped with such a lock will not come apart should it be accidentally struck or should its shelf supporting beams be accidentally raised when items are being unloaded from them.
SUMMARY OF THE INVENTION
Briefly, the lock of my invention is attached to a connector for interconnecting a shelf supporting beam to an upright of a knock-down storage rack. The connector is fixed to the beam and is removably connected to the upright by means of the lock. A
pin is connected to the connector and is slidable between locking and unlocking positions. The pin has a head and a shank connected to and extending from the head and terminating at an outer end. A recess is formed in the shank. The outer end of the pin, when in the locking position, is within one of a number of openings formed in the upright with resulting locking of the upright to the connector. The outer end o f the pin, when in the unlocking position, is outside the opening thus allowing the upright to be separated from the connector. The lock includes a retainer which is biased by rc;silient means into the recess when the pin is in the locking position and prevents the pin from moving from the locking pasition unless a force, opposed to the bias of the retainer, is applied to the pin to cause the retainer to withdraw from the recess.
3 DESCRIPTION OF THE DRAWINGS
The lock of the invention is described with reference to the accompanying drawings in which:
Figure 1 is a perspective view of the lock in conjunction with a connector, a shelf supporting beam and an upright of a knock-down storage rack;
Figure 2 is a perspective view of the connector and an upright;
Figure 3 is a perspective view of the connector from the side opposite that shown in Figures 1 and 2;
Figure 4 is a perspective; view of the connector and upright from the side opposite that shown in Figure 2;
Figure 5 is a perspective view, partly in section and in enlarged scale, of the lock in a deactivated or unlocked position;
Figure 6 is another perspective view of the lock in a locked position;
Figures 7 and 8 are perspective views of portions of the lock. In Figure 7 the lock is in the locked position and in Figure 8 the lock is in the unlocked position.
Like reference characters refer to like parts throughout the description of the drawings.
DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVEN'CION
With reference to Figure 1 the lock of the invention, generally 10, is shown in
The lock of the invention is described with reference to the accompanying drawings in which:
Figure 1 is a perspective view of the lock in conjunction with a connector, a shelf supporting beam and an upright of a knock-down storage rack;
Figure 2 is a perspective view of the connector and an upright;
Figure 3 is a perspective view of the connector from the side opposite that shown in Figures 1 and 2;
Figure 4 is a perspective; view of the connector and upright from the side opposite that shown in Figure 2;
Figure 5 is a perspective view, partly in section and in enlarged scale, of the lock in a deactivated or unlocked position;
Figure 6 is another perspective view of the lock in a locked position;
Figures 7 and 8 are perspective views of portions of the lock. In Figure 7 the lock is in the locked position and in Figure 8 the lock is in the unlocked position.
Like reference characters refer to like parts throughout the description of the drawings.
DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVEN'CION
With reference to Figure 1 the lock of the invention, generally 10, is shown in
4 conjunction with an upright 12 of a conventional knock-down storage rack. A
cannector 14 serves to connect the upright to a shelf supporting beam 16. The connector is affixed to the beam by such means as welding .and bolting while the lock removably connects the connector to the upright in the manner described below.
With reference to Figures 2 and 3, the connector has inner and outer side walls 16, 18 spaced apart by an intermediate wall 20. The outer side wall has an opening 22 for receipt of a bolt for interconnecting the cannector to the upright. The bolt adds rigidity to the storage rack when assembled should that be desirable.
The inner side wall of the connector has a number of teeth or hooks 25 spaced along its inside edge. The inner wall is received in a channel 26 that divides the upright into two parts, one for connection to beam 16 and the ather to a like beam that extends outwardly from the opposite side of the upright.
The connector has a number of generally rectangular openings 28 on its outer wall.
Above each opening is a smaller opening 29, the uppermost 29a of which receives the lock.
On the inside face of the intermediate wall, tabs 32 extend outwardly at 32a from the upper edge of each opening 28 then downwardly.
With reference to Figures 2 and 4, vertically spaced openings 34 are formed in the front faces 36 of the upright and like openings 38 are formed in the channel.
The former openings receive the lock of the invention as well as tabs 32 while the latter openings receive the teeth 25 of the connector.
With reference to Figures 5 and 6, the lock of the invention includes a pin, generally 40, having a head 42 at the outer end of a shank 43. The shank is slidingly mounted in a bushing 44 which consists of inner and outer concentric cylinders 46, 48. The outer cylinder has an outer wall 48 which is stepped inward at 48a. The stepped-in area 48a is received in opening 29a of connector 14. Th.e outer wall is stepped cross-axially outward at 48b and that portion of the outer wall is connected to the outer wall of the connector.
The two cylinders which make up the bushing are pressed together and remain together by friction between the walls of two cylinders that contact each other.
With reference to Figures 7 and 8, the inner cylinder has an annular cavity 50 in which a rod or retainer 52 is received. The rod is confined in the cavity by means of a raised portion 54 of the inner cylinder. 'The upper surface 56 of the raised portion contacts the cross-axially extending lower surface 58 of the outer cylinder 48 so that the rod is confined within the cavity. The rod is normally straight but resiliently deforms to a curved shape when it is within the groove.
With reference again to Figure 5, the outer wall of shank 43 has a pair of spaced annular outer and inner recesses or grooves 60, 62. The rod is received in inner groove 62 when the pin is in the unlocking position as illustrated in Figure 6 and in outer groove 60 when the pin is in the locking position as illustrated in Figure 7.
The pin is in the locking position when the outer or distal end 64 of the shank projects through opening 34 of the upright and its head contacts the outer wall 44a of the bushing.
Rod 52 is within outer groove fi0 and prevents the pin from being withdrawn from the bushing in the direction of arrow 65 unless an outward force is applied to the head of the pin.
The inner side wall 60a of the groove is bevelled or chamfered so that outward force applied to the head will cause the rod to~ rise in the groove and withdraw from it.
When it does, the pin can be drawn outwardly in the direction of the arrow.
When the pin reaches the point illustrated in Figure 5, the rod will enter inner groove 62. That groove serves as a stop point and prevents further outward movement of the pin.
That is because the groove has an inner side wall 62a which is flat and unbevelled. That wall prevents the rod from withdrawing from the groove when further outward force is applied to the pin.
The wall 62b of the inner groove opposite that of wall 62a is bevelled so that if the pin is pushed inward from the position illustrated in Figure 5, the rod will withdraw from the groove and allow the pin to slide to the locking position illustrated in Figure 6.
The means by which the pin serves to lock the connector to the upright is best seen in Figure 4. In that Figure, tabs :32 and teeth 25 are in openings 34 and 38 respectively of the upright and serve to prevent the connector from separating from the upright unless the connector is lifted. Lifting is resisted since there is little if any space between the shank of the pin and the upper edge of opening 34. Figures 4 and 6 illustrate this.
Only when the pin is removed from opening 34 can the connector be lifted and separated from the upright.
The rod is composed c>f resilient material such as spring steel so that it will yield to allow the rod to withdraw from the grooves. However the material of the rod is chosen such that the rod does not yield in this manner unless a comparatively large outward force is applied to the pin.
Preferably, the force sufficient for this purpose can only be applied by means of a prying tool such as a screw driver. With reference to Figure 6, to apply such force, the prying edge of the tool must be inserted in the space 70 between the head and the facing wall of the outer cylinder of the bushing. The tool must be moved back and forth to pry the head outward. The rod should preferably be sufficiently stiff or inflexible that it does not allow the head to be removed by means of a force that is normally possible by a human hand unaided by a tool. As a result, the pin cannot be accidentally removed. It can only be removed by means of a screw driver or other prying tool intentionally inserted in space 70 and deliberately moved in a way that will cause the pin to move outward.
It will be understood of course that modifications can be made in the preferred embodiment of the lock illustrated and described herein without departing from the scope and purview of the invention as claimed.
a
cannector 14 serves to connect the upright to a shelf supporting beam 16. The connector is affixed to the beam by such means as welding .and bolting while the lock removably connects the connector to the upright in the manner described below.
With reference to Figures 2 and 3, the connector has inner and outer side walls 16, 18 spaced apart by an intermediate wall 20. The outer side wall has an opening 22 for receipt of a bolt for interconnecting the cannector to the upright. The bolt adds rigidity to the storage rack when assembled should that be desirable.
The inner side wall of the connector has a number of teeth or hooks 25 spaced along its inside edge. The inner wall is received in a channel 26 that divides the upright into two parts, one for connection to beam 16 and the ather to a like beam that extends outwardly from the opposite side of the upright.
The connector has a number of generally rectangular openings 28 on its outer wall.
Above each opening is a smaller opening 29, the uppermost 29a of which receives the lock.
On the inside face of the intermediate wall, tabs 32 extend outwardly at 32a from the upper edge of each opening 28 then downwardly.
With reference to Figures 2 and 4, vertically spaced openings 34 are formed in the front faces 36 of the upright and like openings 38 are formed in the channel.
The former openings receive the lock of the invention as well as tabs 32 while the latter openings receive the teeth 25 of the connector.
With reference to Figures 5 and 6, the lock of the invention includes a pin, generally 40, having a head 42 at the outer end of a shank 43. The shank is slidingly mounted in a bushing 44 which consists of inner and outer concentric cylinders 46, 48. The outer cylinder has an outer wall 48 which is stepped inward at 48a. The stepped-in area 48a is received in opening 29a of connector 14. Th.e outer wall is stepped cross-axially outward at 48b and that portion of the outer wall is connected to the outer wall of the connector.
The two cylinders which make up the bushing are pressed together and remain together by friction between the walls of two cylinders that contact each other.
With reference to Figures 7 and 8, the inner cylinder has an annular cavity 50 in which a rod or retainer 52 is received. The rod is confined in the cavity by means of a raised portion 54 of the inner cylinder. 'The upper surface 56 of the raised portion contacts the cross-axially extending lower surface 58 of the outer cylinder 48 so that the rod is confined within the cavity. The rod is normally straight but resiliently deforms to a curved shape when it is within the groove.
With reference again to Figure 5, the outer wall of shank 43 has a pair of spaced annular outer and inner recesses or grooves 60, 62. The rod is received in inner groove 62 when the pin is in the unlocking position as illustrated in Figure 6 and in outer groove 60 when the pin is in the locking position as illustrated in Figure 7.
The pin is in the locking position when the outer or distal end 64 of the shank projects through opening 34 of the upright and its head contacts the outer wall 44a of the bushing.
Rod 52 is within outer groove fi0 and prevents the pin from being withdrawn from the bushing in the direction of arrow 65 unless an outward force is applied to the head of the pin.
The inner side wall 60a of the groove is bevelled or chamfered so that outward force applied to the head will cause the rod to~ rise in the groove and withdraw from it.
When it does, the pin can be drawn outwardly in the direction of the arrow.
When the pin reaches the point illustrated in Figure 5, the rod will enter inner groove 62. That groove serves as a stop point and prevents further outward movement of the pin.
That is because the groove has an inner side wall 62a which is flat and unbevelled. That wall prevents the rod from withdrawing from the groove when further outward force is applied to the pin.
The wall 62b of the inner groove opposite that of wall 62a is bevelled so that if the pin is pushed inward from the position illustrated in Figure 5, the rod will withdraw from the groove and allow the pin to slide to the locking position illustrated in Figure 6.
The means by which the pin serves to lock the connector to the upright is best seen in Figure 4. In that Figure, tabs :32 and teeth 25 are in openings 34 and 38 respectively of the upright and serve to prevent the connector from separating from the upright unless the connector is lifted. Lifting is resisted since there is little if any space between the shank of the pin and the upper edge of opening 34. Figures 4 and 6 illustrate this.
Only when the pin is removed from opening 34 can the connector be lifted and separated from the upright.
The rod is composed c>f resilient material such as spring steel so that it will yield to allow the rod to withdraw from the grooves. However the material of the rod is chosen such that the rod does not yield in this manner unless a comparatively large outward force is applied to the pin.
Preferably, the force sufficient for this purpose can only be applied by means of a prying tool such as a screw driver. With reference to Figure 6, to apply such force, the prying edge of the tool must be inserted in the space 70 between the head and the facing wall of the outer cylinder of the bushing. The tool must be moved back and forth to pry the head outward. The rod should preferably be sufficiently stiff or inflexible that it does not allow the head to be removed by means of a force that is normally possible by a human hand unaided by a tool. As a result, the pin cannot be accidentally removed. It can only be removed by means of a screw driver or other prying tool intentionally inserted in space 70 and deliberately moved in a way that will cause the pin to move outward.
It will be understood of course that modifications can be made in the preferred embodiment of the lock illustrated and described herein without departing from the scope and purview of the invention as claimed.
a
Claims (9)
1. A lock for a knock-down storage rack having a plurality of horizontally spaced uprights and vertically spaced shelf supporting beams, said uprights having a plurality of vertically spaced openings formed therein, said lock including: a connector;
means for interconnecting said connector to one said beam; a pin connected to said connector and slidable between locking and unlocking positions, said pin having a head, a shank connected to and extending from said head and terminating at an outer end, said shank having a recess formed therein, the outer end of said pin, when in said locking position, being within one of said openings of one said upright with resulting locking of said one upright to said connector, the outer end of said pin, when in said unlocking position, being outside said one opening;
and a retainer biased by resilient means into said recess when said pin is in said locking position and preventing movement of said pin from said locking position unless a force, opposed to the bias of said retainer, is applied to said pin to cause said retainer to withdraw from said recess.
means for interconnecting said connector to one said beam; a pin connected to said connector and slidable between locking and unlocking positions, said pin having a head, a shank connected to and extending from said head and terminating at an outer end, said shank having a recess formed therein, the outer end of said pin, when in said locking position, being within one of said openings of one said upright with resulting locking of said one upright to said connector, the outer end of said pin, when in said unlocking position, being outside said one opening;
and a retainer biased by resilient means into said recess when said pin is in said locking position and preventing movement of said pin from said locking position unless a force, opposed to the bias of said retainer, is applied to said pin to cause said retainer to withdraw from said recess.
2. The lock as claimed in claim 1 wherein said recess is an annular groove.
3. The lock as claimed in claim 1 wherein said retainer is a resilient rod.
4. The lock as claimed in claim 1 wherein said connector has a bushing which has a bore within which said shank is slidingly received and which has a cavity for receipt of a portion of said retainer.
5. The lock as claimed in any previous claim wherein said recess is partly defined by a pair of spaced side walls, one of which being bevelled for allowing said retainer to withdraw from said recess when a force is applied in a direction that will cause said pin to move from said locking position to said unlocking position, the other of said walls being generally planar and preventing said retainer from withdrawing from said recess when a force is applied to said pin in the opposite said direction whereby said pin remains connected to said connector.
6. The lock as claimed in any previous claim wherein said shank has a second recess for receipt of said retainer when said pin is in said unlocking position, each of said recesses being partly defined by a pair of spaced side walls, one of which being bevelled for allowing said retainer to withdraw from said recess when a force is applied in a direction that will cause said pin to move between said locking and unlocking positions, the other of said walls being generally planar and preventing said retainer from withdrawing from said recess when a force is applied to said pin in the opposite said direction whereby said pin remains connected to said connector
7. The lock as claimed in any previous claim wherein said connector further has a tab removably receivable in said one opening for interconnecting said connector to said one upright.
8. The lock as claimed in any previous claim wherein said retainer frictionally contacts said pin and prevents said pin from sliding from said locking position unless a force is applied to said pin greater than normally possible by a human hand unaided by a tool.
9. The lock as claimed in claims 4 to 8 wherein said bushing has an outer wall, part of which contacts said head when said pin is in said locking position and part of which is spaced apart from said head, said pin being movable from said locking position by forcing a prying tool between said head and said outer wall to cause said head and said spaced apart outer wall to separate.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2344727 CA2344727A1 (en) | 2001-04-20 | 2001-04-20 | Lock for knock-down storage rack |
| CA2382923A CA2382923C (en) | 2001-04-20 | 2002-04-17 | Lock for knock-down storage rack |
| US10/125,406 US6820758B2 (en) | 2001-04-20 | 2002-04-19 | Lock for knock-down storage rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2344727 CA2344727A1 (en) | 2001-04-20 | 2001-04-20 | Lock for knock-down storage rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2344727A1 true CA2344727A1 (en) | 2002-10-20 |
Family
ID=4168878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2344727 Abandoned CA2344727A1 (en) | 2001-04-20 | 2001-04-20 | Lock for knock-down storage rack |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2344727A1 (en) |
-
2001
- 2001-04-20 CA CA 2344727 patent/CA2344727A1/en not_active Abandoned
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